Russian winger Vasily Artemyev scored a hat-trick on his debut and Jamie Elliott bagged two tries as Saints cruised to victory.

Artemyev, who starred for Russia at the World Cup, score with his first touch of the ball in Saints colours to give the hosts a 7-0 lead.

The Russian fly scored his second try out on the wing soon after Saracens centre Kameli Ratuvou sin-binned for a deliberate knock-on.

Northpamton led 14-6 at the break after Ben Spencer landed two penalties for the visitors.

Ryan Lamb extended the lead with drop soon after the break before creating a third try for Artemyev with a smart grubber kick.

Elliott's converted try a few moments later wrapped up a bonus point for Saints.

Returning England internationals Dylan Hartley, Courtney Lawes and Tongan prop Soane Tonga'uiha came on as replacements, enhancing the hosts already dominant pack. Elliott touched down for his second try with five minutes remaining